Arabic (Original)
حَدَّثَنَا يَزِيدُ بْنُ هَارُونَ أَخْبَرَنَا هَمَّامٌ عَنْ قَتَادَةَ عَنْ يَزِيدَ بْنِ عَبْدِ اللَّهِ عَنْ أَخِيهِ عَنْ عِيَاضِ بْنِ حِمَارٍ عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِثْمُ الْمُسْتَبَّيْنِ مَا قَالَا عَلَى الْبَادِئِ حَتَّى يَعْتَدِيَ الْمَظْلُومُ أَوْ إِلَّا أَنْ يَعْتَدِيَ الْمَظْلُومُ شَكَّ يَزِيدُ.
English Translation
Yazid ibn Harun told us, Hammam informed us, from Qatadah, from Yazid ibn Abd Allah, from his brother, from Iyad ibn Himar, from the Prophet, peace and blessings be upon him: The sin of the two who curse each other, for whatever they said, falls upon the one who initiated it, until the wronged one transgresses — or unless the wronged one transgresses, Yazid was uncertain.